Why do climate experts warn the seawall could worsen environmental issues?

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Climate Experts Warn Seawalls May Exacerbate Environmental Problems

Climate experts express concern that the proposed seawall along Java's coast could worsen existing environmental issues. These structures, while intended to combat land loss due to rising sea levels and land subsidence, carry significant negative environmental consequences. Such fortifications can lead to the destruction of beaches, displace erosion further seaward, and disrupt delicate marine ecosystems and the communities that depend on them.
Seawalls Can Cause Ecological Disruption

The construction and presence of seawalls can lead to the loss of vital shoreline habitats. Furthermore, these hardened structures impede the natural movement of both animals and people between terrestrial and marine environments. This disruption affects biodiversity and the ecological balance of the coastal zone.
Erosion and Habitat Loss are Documented Consequences

Evidence from various locations indicates that seawalls can negatively impact coastlines. In some instances, these structures have failed under the relentless force of waves, which simultaneously erode the sand beneath them. This process can lead to the destruction of beaches, a critical habitat for numerous species.
Seawalls Offer Only Temporary Solutions and Worsen Effects

A 2022 United Nations report highlighted that seawalls represent a temporary solution to coastal erosion. The report also cautioned that these structures can, in fact, exacerbate the effects of climate change. This suggests that the long-term environmental costs associated with seawalls may outweigh their immediate protective benefits.

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Why do climate experts warn the seawall could worsen environmental issues?

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